diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index cb0dcbb1..886cd59f 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -36,18 +36,18 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - {std: 11, cxx: g++-10, bt: Debug  , os: ubuntu-18.04  , bitlinks: static64 static32}
-          - {std: 11, cxx: g++-10, bt: Release, os: ubuntu-18.04  , bitlinks: static64 static32}
-          - {std: 17, cxx: g++-10, bt: Debug  , os: ubuntu-18.04  , bitlinks: static64 static32}
-          - {std: 17, cxx: g++-10, bt: Release, os: ubuntu-18.04  , bitlinks: static64 static32}
-          - {std: 20, cxx: g++-10, bt: Debug  , os: ubuntu-18.04  , bitlinks: static64 static32}
-          - {std: 20, cxx: g++-10, bt: Release, os: ubuntu-18.04  , bitlinks: static64 static32}
-          - {std: 11, cxx: vs2019, bt: Debug  , os: windows-latest, bitlinks: static64 static32}
-          - {std: 11, cxx: vs2019, bt: Release, os: windows-latest, bitlinks: static64 static32}
-          - {std: 17, cxx: vs2019, bt: Debug  , os: windows-latest, bitlinks: static64 static32}
-          - {std: 17, cxx: vs2019, bt: Release, os: windows-latest, bitlinks: static64 static32}
-          - {std: 20, cxx: vs2019, bt: Debug  , os: windows-latest, bitlinks: static64 static32}
-          - {std: 20, cxx: vs2019, bt: Release, os: windows-latest, bitlinks: static64 static32}
+          - {std: 11, cxx: g++-10, bt: Debug  , os: ubuntu-18.04, bitlinks: static64 static32}
+          - {std: 11, cxx: g++-10, bt: Release, os: ubuntu-18.04, bitlinks: static64 static32}
+          - {std: 17, cxx: g++-10, bt: Debug  , os: ubuntu-18.04, bitlinks: static64 static32}
+          - {std: 17, cxx: g++-10, bt: Release, os: ubuntu-18.04, bitlinks: static64 static32}
+          - {std: 20, cxx: g++-10, bt: Debug  , os: ubuntu-18.04, bitlinks: static64 static32}
+          - {std: 20, cxx: g++-10, bt: Release, os: ubuntu-18.04, bitlinks: static64 static32}
+          - {std: 11, cxx: vs2019, bt: Debug  , os: windows-2019, bitlinks: static64 static32}
+          - {std: 11, cxx: vs2019, bt: Release, os: windows-2019, bitlinks: static64 static32}
+          - {std: 17, cxx: vs2019, bt: Debug  , os: windows-2019, bitlinks: static64 static32}
+          - {std: 17, cxx: vs2019, bt: Release, os: windows-2019, bitlinks: static64 static32}
+          - {std: 20, cxx: vs2019, bt: Debug  , os: windows-2019, bitlinks: static64 static32}
+          - {std: 20, cxx: vs2019, bt: Release, os: windows-2019, bitlinks: static64 static32}
     env: {BM: ON, STD: "${{matrix.std}}", CXX_: "${{matrix.cxx}}", BT: "${{matrix.bt}}", BITLINKS: "${{matrix.bitlinks}}", VG: "${{matrix.vg}}", SAN: "${{matrix.san}}", LINT: "${{matrix.lint}}", OS: "${{matrix.os}}"}
     steps:
       # use fetch-depth to ensure all tags are fetched